3 Reasons Why Your Furnace Isnt Staying Lit and How to Repair It

A faulty furnace is frustrating to put up with. There are lots of reasons this may happen, but one of the most frequent is something wrong with the burners or associated parts.

Newer models don’t depend on pilot lights to keep the furnace ignited. Instead, they work via electronic ignition. If this ignition fails, the burners won’t perform like they are supposed to.

When your gas furnace is running normally, here’s how it should operate:

  • The thermostat tells your furnace to activate.
  • Your furnace’s draft inducer fan turns on to draw fresh air into your furnace.
  • The gas valve opens to direct gas into the pilot burner.
  • An electronic spark ignites the pilot light.
  • The flame sensor informs your furnace that the pilot is burning.
  • The gas valve moves gas to the primary burners, which are lit by the pilot light.
  • Your furnace then pushes warm air into your house via ductwork.

If something breaks down during this procedure, your furnace will turn off for safety reasons. Or it might stop a few minutes into heating because it’s too warm.

Several of these problems can be handled on their own, but others are best handled by professional help. When you want the finest furnace repair in Columbia, call our heat Experts at 803-399-7208. We work with all brands and our work is backed by a 100% Satisfaction Guarantee for a year.*

Here are a few of the most common reasons why your furnace isn’t staying lit and what to do moving forward.

1. Malfunctioning Flame Sensor

Your furnace’s flame sensor is a safety component that notifies your furnace when gas is ignited. If the sensor is dirty or malfunctioning, it may work intermittently or not at all. Even if the sensor is running as normal, incorrect positioning leaves it unable to recognize the flame at all. While you can start troubleshooting and cleaning this sensor right away, trusting a pro like Midland Air Service Experts will ensure the problem is fixed quickly and correctly.

2. Furnace is Too Warm

Your furnace contains built-in safety functions that shut it off if it gets too hot. One of the most typical causes is a clogged filter. We encourage inspecting your air filter monthly. If you can’t see light through it, change it.

3. Thermostat Malfunction

Your thermostat directs your furnace when it needs to heat your home. When it’s not functioning normally, your furnace will struggle to keep your home warm. This can be a battery or electrical malfunction, depending on what model of thermostat you have. We recommend opening your owner’s manual or manufacturer’s website for useful troubleshooting procedures. If you still can’t get yours working, get in touch with our Experts at 803-399-7208. We’ll pinpoint the problem swiftly and can replace your thermostat, if necessary.

Some of these issues, including a dirty flame sensor or an overheated furnace, are caused by a lack of routine furnace maintenance. It’s crucial to have this service completed yearly, because it could help minimize breakdowns, enhance your furnace’s energy efficiency and might even make it last longer.

We Have You Covered When It’s Time for Furnace Replacement

Eventually, your furnace won’t work like it should regardless of attempts to repair or maintain it. When the time comes, trust Midland Air Service Experts and our professional furnace replacement in Columbia. We work with some of the number one furnace brands, such as Lennox®, to offer you affordable, energy-efficient heating systems.

When you’re contemplating replacing your furnace, consider enrolling in our Advantage Program™. Getting a new furnace can run thousands of dollars out of pocket. As an Advantage member, you’ll receive a new furnace for just one low monthly fee. There’s no down payment or installation charges, and you get to hold on to any helpful rebates.

What’s even better is that Advantage members don’t pay a penny for repairs** or maintenance. If disaster hits, you’re supported with 24/7 priority service. You’ll also obtain discounts, no last-minute charges and lots of other benefits.

Don’t struggle with interruptions to your comfort for a moment longer. Give Midland Air Service Experts a call at 803-399-7208 to request an appointment today. Whether you need repairs or if it’s time for a new furnace, we guarantee your satisfaction.


*Not applicable to the Advantage Program. See your signed Advantage Program agreement for full details and exclusions. 100% Satisfaction Guarantee is subject to certain restrictions and limitations as set forth in the applicable Terms and Conditions. **See your signed Advantage Agreement for details.

Contact Us